修改datasource配置。

doc-admin/src/main/resources/application-dev.yml

@@ -44,7 +44,7 @@ spring:
   #数据源配置
   datasource:
     type: com.alibaba.druid.pool.DruidDataSource
-    driverClassName: com.mysql.cj.jdbc.Driver
+    driver-class-name: com.mysql.cj.jdbc.Driver
     druid:
       # 主库数据源
       master: